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Hydraulic control device for dual-clutch automatic transmission

A technology of automatic transmission and double clutch, which is applied in transmission control, components with teeth, belts/chains/gears, etc., can solve problems such as energy loss in hydraulic systems, achieve energy and pressure loss, and ensure driving safety Effect

Inactive Publication Date: 2015-02-11
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the clutch safety valve is connected in series on the oil circuit, when the clutch hydraulic cylinder is pressurized, the oil must flow through the clutch safety valve, so there is a problem of energy loss in the hydraulic system

Method used

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  • Hydraulic control device for dual-clutch automatic transmission

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Embodiment Construction

[0012] Below in conjunction with accompanying drawing and embodiment the present invention is further elaborated:

[0013] Such as figure 1 The shown hydraulic control device for dual clutch automatic transmission includes a first pressure control valve 1 and a second pressure control valve 2, a first clutch hydraulic cylinder 5 and a second clutch hydraulic cylinder 6, the first pressure control valve The oil inlet 1P of 1 communicates with the main oil passage 15 through the first branch oil passage 16, the oil outlet 1A of the first pressure control valve 1 communicates with the first clutch hydraulic cylinder 5 through the first branch oil passage 16, and the first pressure The oil return port 1T of the control valve communicates with the oil tank 18; a first safety valve 3 is provided in the first branch oil passage 16 between the first pressure control valve 1 and the first clutch hydraulic cylinder 5, and the first The oil inlet 3P of the safety valve 3 communicates wi...

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Abstract

The invention relates to a hydraulic control device for a dual-clutch automatic transmission, and the hydraulic control device comprises first and second pressure control valves, and first and second clutch cylinders, wherein the fuel inlet of the first pressure control valve is communicated with a main fuel line, the fuel outlet thereof is communicated with the first clutch cylinder and the fuel return opening thereof is communicated with a fuel tank; a first safety valve is arranged between the first pressure control valve and the first clutch cylinder, the fuel inlet thereof is communicated with a first branch fuel line, and the fuel return opening thereof is communicated with the fuel tank; the fuel inlet of the second pressure control valve is communicated with the main fuel line, the fuel outlet thereof is communicated with the second clutch cylinder, and the fuel return opening thereof is communicated with the fuel tank; a second safety valve is arranged between the second pressure control valve and the second clutch cylinder, the fuel inlet thereof is communicated with a second branch fuel line, and the fuel return opening thereof is communicated with the fuel tank. By the hydraulic control device, the clutch still can release pressure when the pressure control valve is in trouble and the hydraulic system can be prevented from energy loss.

Description

technical field [0001] The invention relates to the technical field of automobile transmissions, in particular to a hydraulic control device for a dual-clutch automatic transmission. Background technique [0002] In the dual-clutch automatic transmission, the two clutches are respectively connected to the two input shafts. During the shifting process of the transmission, the two clutches switch. flameout; and if the overlap of the two clutches is too small, the power switching interruption will occur. Therefore, it is an important factor affecting the normal operation of the dual-clutch transmission to control the matching timing of the separation and engagement of the two clutches during the gear shifting process. [0003] The current double clutch widely adopts hydraulic control device, and the oil pressure entering the clutch hydraulic cylinder is directly controlled by the clutch pressure control valve, and then the separation or combination of the clutch is controlled....

Claims

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Application Information

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IPC IPC(8): F16H61/18F16H61/4043F16H61/688
CPCF16H61/0009F16H61/688F16H2061/0034
Inventor 赵宗琴刘刚王鑫夏灵
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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